Solve for z z^2+4=4z

Math
Subtract from both sides of the equation.
Factor using the perfect square rule.
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Rearrange terms.
Rewrite as .
Check the middle term by multiplying and compare this result with the middle term in the original expression.
Simplify.
Factor using the perfect square trinomial rule , where and .
Set the equal to .
Add to both sides of the equation.
Solve for z z^2+4=4z

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